package cn.buyclss.backend.aop;

import cn.buyclss.backend.annotation.SysLog;
import cn.buyclss.backend.entity.domain.SysLogEntity;
import cn.buyclss.backend.entity.domain.User;
import cn.buyclss.backend.entity.vo.LoginUserVO;
import cn.buyclss.backend.entity.vo.RegisterUserVO;
import cn.buyclss.backend.service.SysLogService;
import cn.buyclss.backend.service.impl.shop.GoodsServiceImpl;
import cn.buyclss.backend.util.HttpContextUtils;
import cn.buyclss.backend.util.IPUtils;
import com.alibaba.fastjson.JSON;
import org.apache.shiro.SecurityUtils;
import org.aspectj.lang.JoinPoint;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.annotation.Before;
import org.aspectj.lang.annotation.Pointcut;
import org.aspectj.lang.reflect.MethodSignature;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.servlet.http.HttpServletRequest;
import java.lang.reflect.Method;
import java.util.Date;

/**
 * 系统日志，切面处理类
 *
 * @author: Cecurio
 * @create: 2019-03-13 22:59
 **/
@Aspect
@Component
public class SysLogAspect {

    private Logger logger = LoggerFactory.getLogger(SysLogAspect.class);

    @Autowired
    private SysLogService sysLogService;

    /**
     * 切点
     */
    @Pointcut("@annotation(cn.buyclss.backend.annotation.SysLog)")
    public void logPointCut() {

    }

    /**
     * 前置通知
     *
     * @param joinPoint 连接点
     */
    @Before("logPointCut()")
    public void saveSysLog(JoinPoint joinPoint) {
        MethodSignature signature = (MethodSignature) joinPoint.getSignature();
        Method method = signature.getMethod();

        SysLogEntity sysLog = new SysLogEntity();
        SysLog syslog = method.getAnnotation(SysLog.class);
        if (syslog != null) {
            //注解上的描述
            sysLog.setOperation(syslog.value());
        }

        //请求的方法名
        String className = joinPoint.getTarget().getClass().getName();
        String methodName = signature.getName();
        sysLog.setMethod(className + "." + methodName + "()");

        //请求的参数
        Object[] args = joinPoint.getArgs();
        String params = "没有参数";
        if (args.length > 0) {
            params = JSON.toJSONString(args[0]);
        }

        sysLog.setParams(params);

        //获取request
        HttpServletRequest request = HttpContextUtils.getHttpServletRequest();
        //设置IP地址
        sysLog.setIp(IPUtils.getIpAddr(request));

        //用户名
//        SysUserEntity sysUserEntity = ShiroUtils.getUserEntity();
        User sysUserEntity = (User) SecurityUtils.getSubject().getPrincipal();
        String username = "";
        if ("login".equals(methodName)) {
            LoginUserVO userVO = JSON.parseObject(params, LoginUserVO.class);
            username = userVO.getUserName();
        } else if ("register".equals(methodName)) {
            RegisterUserVO registerUserVO = JSON.parseObject(params, RegisterUserVO.class);
            username = registerUserVO.getUserName();
        } else {
            // other case
        }

        if (null != sysUserEntity) {
            username = sysUserEntity.getUserName();
        }
        sysLog.setUsername(username);

        sysLog.setCreateDate(new Date());
        //保存系统日志
        sysLogService.save(sysLog);
        logger.info(sysLog.toString());
    }

}
